Quantitative and Statistical Research Collaboration Completed
Mathematical and statistical models are powerful research tools that play several important roles in conceptualizing and understanding the structure and dynamics of complicated ecological systems, including developing mechanistic hypotheses pertaining to ecological systems, designing studies that elucidate ecosystem structure and function, and extracting information from data.
The complex nature of ecological systems and the data arising from studies of these systems often require the development of specialized and sophisticated models so that progress can be made in understanding these systems. The objective under this task is to develop mathematical or statistical models that abstract and accommodate the unique characteristics of ecological systems and data, while allowing for maximum extraction of information about those systems. This is accomplished through collaboration with field biologists having unique or unusual data analysis questions or circumstances, and with mathematicians and statisticians able to creatively apply powerful mathematical or statistical methods to difficult, real-world problems.
Below are other science projects associated with this project.
Below are publications associated with this project.
Influences of immunocontraception on time budgets, social behavior, and body condition in feral horses
Application of the Hydroecological Integrity Assessment Process for Missouri Streams
Quantifying Equid Behavior - A Research Ethogram for Free-Roaming Feral Horses
User manual for Blossom statistical package for R
The Conservation Reserve Program: Planting for the future. Proceedings of a National Conference, Fort Collins, Colorado, June 6-9, 2004
Isolation of Snake River islands and mammalian predation of waterfowl nests
Evaluation of a habitat suitability index model
User manual for Blossom Statistical Software
Effects of emergency haying on vegetative characteristics within selected Conservation Reserve Program fields in the Northern Great Plains
Establishment, growth, and early survival of woody riparian species at a Colorado gravel pit
Movement patterns and the conservation of amphibians breeding in small, temporary wetlands
Estimation of lipids and lean mass of migrating sandpipers
- Overview
Mathematical and statistical models are powerful research tools that play several important roles in conceptualizing and understanding the structure and dynamics of complicated ecological systems, including developing mechanistic hypotheses pertaining to ecological systems, designing studies that elucidate ecosystem structure and function, and extracting information from data.
The complex nature of ecological systems and the data arising from studies of these systems often require the development of specialized and sophisticated models so that progress can be made in understanding these systems. The objective under this task is to develop mathematical or statistical models that abstract and accommodate the unique characteristics of ecological systems and data, while allowing for maximum extraction of information about those systems. This is accomplished through collaboration with field biologists having unique or unusual data analysis questions or circumstances, and with mathematicians and statisticians able to creatively apply powerful mathematical or statistical methods to difficult, real-world problems.
- Science
Below are other science projects associated with this project.
- Publications
Below are publications associated with this project.
Filter Total Items: 29Influences of immunocontraception on time budgets, social behavior, and body condition in feral horses
Managers concerned with shrinking habitats and limited resources for wildlife seek effective tools for limiting population growth in some species. Fertility control is one such tool, yet little is known about its impacts on the behavioral ecology of wild, free-roaming animals. We investigated influences of the immunocontraceptive porcine zona pellucida (PZP) on individual and social behavior in baAuthorsJ.I. Ransom, B.S. Cade, N.T. HobbsApplication of the Hydroecological Integrity Assessment Process for Missouri Streams
Natural flow regime concepts and theories have established the justification for maintaining or restoring the range of natural hydrologic variability so that physiochemical processes, native biodiversity, and the evolutionary potential of aquatic and riparian assemblages can be sustained. A synthesis of recent research advances in hydroecology, coupled with stream classification using hydroecologiAuthorsJonathan Kennen, James A. Henriksen, John Heasley, Brian S. Cade, James W. TerrellQuantifying Equid Behavior - A Research Ethogram for Free-Roaming Feral Horses
Feral horses (Equus caballus) are globally distributed in free-roaming populations on all continents except Antarctica and occupy a wide range of habitats including forest, grassland, desert, and montane environments. The largest populations occur in Australia and North America and have been the subject of scientific study for decades, yet guidelines and ethograms for feral horse behavioral researAuthorsJason I. Ransom, Brian S. CadeUser manual for Blossom statistical package for R
Blossom is an R package with functions for making statistical comparisons with distance-function based permutation tests developed by P.W. Mielke, Jr. and colleagues at Colorado State University (Mielke and Berry, 2001) and for testing parameters estimated in linear models with permutation procedures developed by B. S. Cade and colleagues at the Fort Collins Science Center, U.S. Geological Survey.AuthorsMarian Talbert, Brian S. CadeThe Conservation Reserve Program: Planting for the future. Proceedings of a National Conference, Fort Collins, Colorado, June 6-9, 2004
In June 2004 the U.S. Department of Agriculture’s Farm Service Agency (FSA), with support from the U.S. Geological Survey (USGS), held a three-day symposium on the Conservation Reserve Program (CRP) in Fort Collins, Colorado. These proceedings contain papers by most of those who made presentations at the symposium, but some were unable to provide written papers. This shortcoming has been addressedIsolation of Snake River islands and mammalian predation of waterfowl nests
In 1990–1992, we studied predation of waterfowl nests by mammalian predators on 30 islands in a 64-km reach of the Snake River in southwestern Idaho, USA, to identify river flows necessary to protect and enhance migratory bird use of Deer Flat National Wildlife Refuge. We monitored 235–314 Canada goose (Branta canadensis) nests each year and 122 duck nests, primarily mallard (Anas platyrhynchos),AuthorsB.W. Zoellick, H.M. Ulmschneider, B.S. Cade, A.W. StanleyEvaluation of a habitat suitability index model
We assisted with development of a model for maternity habitat of the Indiana bat (Myotis soda/is), for use in conducting assessments of projects potentially impacting this endangered species. We started with an existing model, modified that model in a workshop, and evaluated the revised model, using data previously collected by others. Our analyses showed that higher indices of habitat suitabilityAuthorsA.H. Farmer, B.S. Cade, D.F. StaufferUser manual for Blossom Statistical Software
Blossom is an interactive program for making statistical comparisons with distance-function based permutation tests developed by P. W. Mielke, Jr. and colleagues at Colorado State University (Mielke and Berry 2001) and for testing parameters estimated in linear models with permutation procedures developed by B. S. Cade and colleagues at the Fort Collins Science Center, U. S. Geological Survey (knoAuthorsBrian S. Cade, Jon RichardEffects of emergency haying on vegetative characteristics within selected Conservation Reserve Program fields in the Northern Great Plains
Successional changes in vegetation composition within seeded grasslands may effect attainment of long term conservaation objectives. Comparisons between vegetation composition within Conservation Reserve Program (CRP) fields planted to cool season, introduced grasses hayed for emergency we, and non hayed fields of the same age and species composition were completed to determine potential effects oAuthorsA.W. Allen, B.S. Cade, M.W. VandeverEstablishment, growth, and early survival of woody riparian species at a Colorado gravel pit
Presence of a wetted edge during the period of seedfall was an effective predictor of suitable establishment (defined as germination and survival to the 1st autumn) locations for Populas deltoides subsp. monilifera, Salix amygdaloides, S. exigua, and Tamarix ramosissima seedlings during 3 successive years of a gravel pit revegetation project in Fort Collins, Colorado. At locations predicted to beAuthorsJ. E. Roelle, D.N. Gladwin, B.S. CadeMovement patterns and the conservation of amphibians breeding in small, temporary wetlands
Many amphibians breed in water but live most of their lives in terrestrial habitats. Little is known, however, about the spatial distribution of these habitats or of the distances and directions amphibians move to reach breeding sites. The amphibian community at a small, temporary pond in northcentral Florida was monitored for 5 years. Based on captures and recaptures of more than 2500 striped newAuthorsC. K. Dodd, B.S. CadeEstimation of lipids and lean mass of migrating sandpipers
Estimation of lean mass and lipid levels in birds involves the derivation of predictive equations that relate morphological measurements and, more recently, total body electrical conductivity (TOBEC) indices to known lean and lipid masses. Using cross-validation techniques, we evaluated the ability of several published and new predictive equations to estimate lean and lipid mass of Semipalmated SaAuthorsSusan K. Skagen, Fritz L. Knopf, Brian S. Cade